Files
wx_pbzc/utils/theme.js
T
lc e2186b2502 fix: theme persistence — error handling, backup, stale highlight
Bug 1 (critical): setTheme lacked try/catch around wx.setStorageSync.
  If storage write throws (full / permission), the theme silently
  fails to persist but UI has already changed → on next cold start
  getCurrentTheme falls back to orange.
  → Wrap in try/catch; still apply UI change even if storage fails
    (better to see the right color now than revert immediately).

Bug 2 (display): settings onShow called applyThemeToPage (updates
  'theme' object) but never refreshed 'currentThemeId'. After tab
  switching, the radio highlight showed the wrong theme.
  → Add setData({ currentThemeId }) in onShow.

Redundancy: theme now also saved as themeId in user_settings.
  getCurrentTheme falls back to user_settings.themeId if app_theme
  key is unexpectedly missing, providing a recovery path.
2026-06-04 16:43:32 +08:00

120 lines
2.8 KiB
JavaScript

const THEMES = [
{
id: 'orange',
name: '活力橙',
primary: '#FF6B35',
primaryLight: '#FF8C5A',
primaryBg: '#FFF3ED',
primaryRgb: '255,107,53'
},
{
id: 'blue',
name: '深海蓝',
primary: '#2979FF',
primaryLight: '#5C9CFF',
primaryBg: '#EDF4FF',
primaryRgb: '41,121,255'
},
{
id: 'green',
name: '森林绿',
primary: '#43A047',
primaryLight: '#6EC072',
primaryBg: '#EDF7EE',
primaryRgb: '67,160,71'
},
{
id: 'purple',
name: '优雅紫',
primary: '#7E57C2',
primaryLight: '#A08AD6',
primaryBg: '#F5F0FA',
primaryRgb: '126,87,194'
},
{
id: 'pink',
name: '樱花粉',
primary: '#EC407A',
primaryLight: '#F06A9A',
primaryBg: '#FDEEF3',
primaryRgb: '236,64,122'
}
]
const BASE_VARS = '--text:#333;--text-secondary:#999;--bg:#F5F5F5;--card-bg:#FFFFFF;--border:#EEE;--success:#4CAF50;'
const DEFAULT_THEME_ID = 'orange'
const THEME_KEY = 'app_theme'
let _lastNavColor = ''
let _navColorTimer = null
const getThemeById = (id) => THEMES.find(t => t.id === id) || THEMES[0]
const getCurrentTheme = () => {
let id = wx.getStorageSync(THEME_KEY)
if (!id) {
// fallback: try recovering from user_settings backup
try {
const s = wx.getStorageSync('user_settings')
if (s && s.themeId) id = s.themeId
} catch (e) {}
}
return getThemeById(id || DEFAULT_THEME_ID)
}
const _setNavBarColor = (primary) => {
if (_lastNavColor === primary) return
_lastNavColor = primary
if (_navColorTimer) clearTimeout(_navColorTimer)
_navColorTimer = setTimeout(() => {
try {
wx.setNavigationBarColor({
frontColor: '#ffffff',
backgroundColor: primary
})
} catch (e) {}
}, 50)
}
const setTheme = (id) => {
try {
wx.setStorageSync(THEME_KEY, id)
// redundant backup in user_settings
try {
const s = wx.getStorageSync('user_settings') || {}
s.themeId = id
wx.setStorageSync('user_settings', s)
} catch (e) {}
} catch (e) {
console.error('Failed to save theme:', e)
}
const theme = getThemeById(id)
_setNavBarColor(theme.primary)
const app = getApp()
if (app && app.globalData) app.globalData.theme = theme
return theme
}
const applyThemeToPage = (self) => {
const theme = getCurrentTheme()
self.setData({
theme,
themeStyle: `${BASE_VARS}--primary:${theme.primary};--primary-light:${theme.primaryLight};--primary-bg:${theme.primaryBg};--primary-rgb:${theme.primaryRgb};`
})
_setNavBarColor(theme.primary)
}
const getThemeStyle = (theme) => {
const t = theme || getCurrentTheme()
return `${BASE_VARS}--primary:${t.primary};--primary-light:${t.primaryLight};--primary-bg:${t.primaryBg};--primary-rgb:${t.primaryRgb};`
}
module.exports = {
THEMES,
DEFAULT_THEME_ID,
getThemeById,
getCurrentTheme,
setTheme,
applyThemeToPage,
getThemeStyle
}